... in the end I have to manually enter each nucleotide, am I understanding this right? In other words I can't be lazy and store several DNA files I downloaded online into arrays and then operate on them. For each of my array I have to manually type the nucleotide sequences in myself or copy+paste them in

You have to realize that when you read a file with | with a sequence of statements like
    $DNA3file = 'testDNA3';
    open(DNA3handle, $DNA3file);
    @DNA3 = <DNA3handle>;
the  @DNA3 array ends up with all the lines of the file, and each line is a string that looks like  "ATCCATGC\n" (note the newline that will be at the end of (almost) every line).

If you have the lines of the file as strings, you | your program can operate on them as strings, break them up into arrays and operate on them, etc., as appropriate for your application. Your choice.

Give a man a fish:  <%-{-{-{-<

In reply to Re^3: Splice an array into another array by AnomalousMonk
in thread Splice an array into another array by Smeb

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